• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
Where premium quality meets exceptional value. ZEISS Conquest HDX.

Nikon HG L, 8x32, Allbinos, Tests best. (1 Viewer)

Hi!

My name is Arek and I am Editor in Chief of Optyczne/Allbinos/LensTip sites.
First of all, thank you for reading and commenting our results.

I would like to mention here that all our binoculars, lenses and cameras reviews are first published in Polish at Optyczne.pl and further translated and published at Allbinos and LensTip.

According to the measurements errors you might find some answers in our FAQ section (translated at LensTip.com). Question no 15 is:

"Can you trust implicitly all the points presented on different kinds of charts and graphs in the tests?"

Answer: "No. All physics measurements are burdened with measurement errors – both statistical and systematic. You can minimize these errors and we try to do it, but you can’t avoid them completely. It’s also worth remembering that you can’t solve this problem by simply stating a value and its margin of error. The result of 40 lpmm ± 1 lpmm, according to the statistics (so-called 1-sigma) means that we are dealing with a 68% probability that the real value, measured by us, ranges from 39 to 41 lpmm. Still, there are 32% confidence that the value is actually lower than 39 lpmm or higher than 41 lpmm. You can also use 2 sigma or 3 sigma error measure criteria to increase the probability of the right value assessment. In our example, then, you can be 95.4% sure that our value is within the 38-42 lpmm range and 99.7% sure that it is within the 37-43 lpmm range. All the same, there is a 0.3% probability that the value is somewhere outside that range. In other words 3 measurements out of 1000 will differ from the real result by over 3 times the given margin of error . Taking into account the fact that on our graphs of lenses and cameras there are over several thousands of measurement points presented, the statistics makes us practically sure that more of a dozen of them differ a lot from the real value."


It can be also used for transmission graphs. The weakest point in this category is zero point determination which error is estimated to 1-2%. And
it is one sigma error. It means that 68% of tested binoculars fall into this range but still 32% do not fall. It also means that almost 5% of tested binoculars will have errors as large as 2-4%. The theory of measurement errors is merciless here.

Thus it is possible that Nikon HG 8x32 is one of the binoculars located away of 1-2 sigma range. We have 100 binoculars tested at Allbinos now (200 at Optyczne). Maths guarantees that in 4-5 cases these errors are larger than 2-sigma. Maybe Nikon belongs to this group.

I hope it helps.

Greetings! And keep checking Allbinos. I have just received another package of translated reviews from our translator and I will be posting them as soon as possible.

Arek
 
Hi!

My name is Arek and I am Editor in Chief of Optyczne/Allbinos/LensTip sites.
First of all, thank you for reading and commenting our results.

I would like to mention here that all our binoculars, lenses and cameras reviews are first published in Polish at Optyczne.pl and further translated and published at Allbinos and LensTip.

According to the measurements errors you might find some answers in our FAQ section (translated at LensTip.com). Question no 15 is:

"Can you trust implicitly all the points presented on different kinds of charts and graphs in the tests?"

Answer: "No. All physics measurements are burdened with measurement errors – both statistical and systematic. You can minimize these errors and we try to do it, but you can’t avoid them completely. It’s also worth remembering that you can’t solve this problem by simply stating a value and its margin of error. The result of 40 lpmm ± 1 lpmm, according to the statistics (so-called 1-sigma) means that we are dealing with a 68% probability that the real value, measured by us, ranges from 39 to 41 lpmm. Still, there are 32% confidence that the value is actually lower than 39 lpmm or higher than 41 lpmm. You can also use 2 sigma or 3 sigma error measure criteria to increase the probability of the right value assessment. In our example, then, you can be 95.4% sure that our value is within the 38-42 lpmm range and 99.7% sure that it is within the 37-43 lpmm range. All the same, there is a 0.3% probability that the value is somewhere outside that range. In other words 3 measurements out of 1000 will differ from the real result by over 3 times the given margin of error . Taking into account the fact that on our graphs of lenses and cameras there are over several thousands of measurement points presented, the statistics makes us practically sure that more of a dozen of them differ a lot from the real value."


It can be also used for transmission graphs. The weakest point in this category is zero point determination which error is estimated to 1-2%. And
it is one sigma error. It means that 68% of tested binoculars fall into this range but still 32% do not fall. It also means that almost 5% of tested binoculars will have errors as large as 2-4%. The theory of measurement errors is merciless here.

Thus it is possible that Nikon HG 8x32 is one of the binoculars located away of 1-2 sigma range. We have 100 binoculars tested at Allbinos now (200 at Optyczne). Maths guarantees that in 4-5 cases these errors are larger than 2-sigma. Maybe Nikon belongs to this group.

I hope it helps.

Greetings! And keep checking Allbinos. I have just received another package of translated reviews from our translator and I will be posting them as soon as possible.

Arek


Arek,

Why not include boosted resolution results in your binocular tests? Why do such a comprehensive test of bins. and leave out [arguably] the most important aspect?

BTW -love the site and love most of your review process.
 
Resolution is in fact tested but not directly named. It is divided between categories such as astigmatism, coma, CA.
 
Resolution is in fact tested but not directly named. It is divided between categories such as astigmatism, coma, CA.

I mean resolution in arc seconds. I know it isn't always a practical measurement but I would think the higher the boosted resolution, the higher the quality of the optical system.

BTW - how does the measurement of coma, CA and astigmatism equate to ''resolution''?

And why give such a high value to a lack of distortion, when that lack of distortion is often an indication of poor panning characteristics, very important for birding or hunting. I thought distortion was intentionally added to a design to reduce these side-effects and not necessarily a ''defect''?
 
Resolution is in fact tested but not directly named. It is divided between categories such as astigmatism, coma, CA.

Resolution is well defined property measured at center field (so there should be no coma or astigmatism in any sensible optical system) and is measured monochromatically so it says nothing about CA (longitudinal or lateral).

Perhaps you are really measuring perceived sharpness (a rather different property)?
 
I enjoyed reading the Polish tests. However, the review of the Nikon 10x42EDG refers to the body 'housing' thus: "Chewing the leaves lightly lenses". I'm not technically qualified in the science of optics, but this comment I find especially enigmatic. Or has something been lost in the translation?
 
Resolution is well defined property measured at center field (so there should be no coma or astigmatism in any sensible optical system) and is measured monochromatically so it says nothing about CA (longitudinal or lateral).

Perhaps you are really measuring perceived sharpness (a rather different property)?

I agree, Kevin. While I enjoy reading allbinos reviews (at least the ones translated into English), I am surprised to see with all the different measurements they do that centerfield resolution in arc seconds is not listed.

Most testers/reviewers use a standard resolution chart and put a 3x booster on the bin's EP to test resolution. Given the difference in resolution between barrels in some samples, both barrels should be tested. An average resolution could be listed, but if there's a significant difference in resolution between the two barrels, it should be mentioned, just as the 10% difference in brightness between barrels was mentioned in allbinos' review of the 10x42 Meopta Meostar.

Amateur astronomers like Edz from Cloudy Nights go a step farther (out) and measure resolution at various distances from the center to show how well the resolution holds up at the edge, which is something that allbinos mentions in its reviews (i.e, edge sharpness), but doesn't list measurements.

Holger Merlitz doesn't post edge sharpness measurements but he does rate "image sharpness" based on edge sharpness rather than centerfield sharpness, the latter being of more interest to most birders.

I would like to see centerfield resolution added to allbinos lists of "results".

For me, "sharpness" is a combination of resolution, CA control, contrast, and color saturation. I don't know if any objective tests exist for contrast and color saturation. But for someone who has experience with binoculars, the difference is "palpable".

Brock
 
Last edited:
I enjoyed reading the Polish tests. However, the review of the Nikon 10x42EDG refers to the body 'housing' thus: "Chewing the leaves lightly lenses". I'm not technically qualified in the science of optics, but this comment I find especially enigmatic. Or has something been lost in the translation?

Muahaha! It should say "The rubber at the objectives moves off a little bit". ("Guma przy obiektywach lekko odchodzi" in the original).
 
Warning! This thread is more than 14 years ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.

Users who are viewing this thread

Back
Top